The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2005
Filed:
Nov. 03, 2003
Arno Lange, Bad Durkheim, DE;
Helmut Mach, Heidelberg, DE;
Darijo Mijolovic, Mannheim, DE;
Hans Peter Rath, Gruenstadt, DE;
Arno Lange, Bad Durkheim, DE;
Helmut Mach, Heidelberg, DE;
Darijo Mijolovic, Mannheim, DE;
Hans Peter Rath, Gruenstadt, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for preparing polyisobutenyl (thio)ethers by reacting a polyisobutene epoxide having at least one terminal epoxide group with itself, with other epoxides and/or with nucleophiles selected from among alcohols and thiols in the presence of a Lewis-acid compound as catalyst and/or a cationic photoinitiator with illumination is described. The side reaction of the rearrangement of the epoxide to the polyisobutenyl aldehyde is suppressed. In addition, a curable composition comprising a polyisobutene epoxide, an epoxide different therefrom and optionally a poly(thi)ol is also described.